1328908688 has 10 divisors (see below), whose sum is σ = 2574760614. Its totient is φ = 664454336.

The previous prime is 1328908663. The next prime is 1328908703. The reversal of 1328908688 is 8868098231.

It can be written as a sum of positive squares in only one way, i.e., 1175941264 + 152967424 = 34292^2 + 12368^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41528381 + ... + 41528412.

Almost surely, 2^1328908688 is an apocalyptic number.

It is an amenable number.

1328908688 is a deficient number, since it is larger than the sum of its proper divisors (1245851926).

1328908688 is an equidigital number, since it uses as much as digits as its factorization.

1328908688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83056801 (or 83056795 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 53.

The square root of 1328908688 is about 36454.1998677793. The cubic root of 1328908688 is about 1099.4235789889.

The spelling of 1328908688 in words is "one billion, three hundred twenty-eight million, nine hundred eight thousand, six hundred eighty-eight".